Photoautotrophic microorganisms, such as microalgae and cyanobacteria, are known to perform an essential role in ecological functions. Besides, they are considered cell factories, producing various bioproducts of commercial interest. In mangroves, these microorganisms are primarily responsible for the ecosystem's high productivity. Moreover, the unique natural characteristics of mangroves, coupled with the intense pressure from anthropic activities that these ecosystems typically experience, make mangrove photoautotrophic microbiota biotechnologically attractive. In this work, the ecological role and biotechnological potential of photoautotrophic mangrove microorganisms worldwide were evaluated, highlighting, their ecosystem services and bioproducts with environmental and commercial appeal, as well as their strategic and technological application through patent analysis.

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